1 Introduction
SNOMED CT terminology provides a common language that enables a consistent way of indexing, storing, retrieving, and aggregating clinical data across specialties and sites of care.
The International Health Terminology Standards Development organisation (IHTSDO®), trading as SNOMED International, maintains the SNOMED CT technical design, the content architecture, the SNOMED CT content (includes the concepts table, the descriptions table, the relationships table, a history table, and ICD mappings), and related technical documentation.
2 Background
This document provides a summarized description of the content changes included in the March 2022 Production release of the SNOMED Clinical Terms® Managed Service Belgium Extension package.
It also includes technical notes detailing the known issues which have been identified (should any of these exist). These are content or technical issues where the root cause is understood, and the fix has been discussed and agreed, but has yet to be implemented.
This Belgium Extension package is dependent upon, and should therefore be consumed in conjunction with the SNOMED CT® January 2022 International Edition release.
2.1 Scope
This document is written for the purpose described above and is not intended to provide details of the technical specifications for SNOMED CT or encompass every change made during the release.
3 Content Development Activity
3.1 Summary
Content from the SNOMED CT® January 2022 International Edition release has been translated.
This extension contains concepts, relationships and reference sets with their Dutch and French translations for healthcare professionals.
3.2 New and Updated Content
New Belgian content in this release:
New concepts
No new concepts have been created in this release.
New reference sets
A new reference set has been created for a common problem list: "Belgian subset for medical problems in patient health records".
This reference set currently contains 7979 concepts and will be updated in the future as needed.
New translated content
For the GP language refset:
- 1280 concepts added in the GP subset
In this release, concepts added in the previous release were also translated.
This gives the following total result per hierarchy.
DUTCH
hierarchy | Preferred | Acceptable | Total |
body structure/morphologic abnormality | 2 | 2 | |
event | 10 | 8 | 18 |
finding | 3433 | 1235 | 4668 |
procedure | 13 | 3 | 16 |
situation | 47 | 12 | 59 |
Total | 3505 | 1258 | 4763 |
FRENCH
hierarchy | Preferred | Acceptable | Total |
body structure/morphologic abnormality | 2 | 2 | |
event | 10 | 7 | 17 |
finding | 3433 | 1159 | 4592 |
procedure | 13 | 2 | 15 |
situation | 47 | 6 | 53 |
Total | 3505 | 1174 | 4679 |
For the national language refset:
The new translated concepts belong to the following hierarchies.
DUTCH
Hierarchy | Preferred | Acceptable | Total |
event | 19 | 9 | 28 |
finding | 86014 | 103754 | 189768 |
metadata | 1 | 1 | |
procedure | 45503 | 52690 | 98193 |
product | 3 | 3 | 6 |
situation | 4610 | 5552 | 10162 |
substance | 2946 | 3363 | 6309 |
Total | 139096 | 162371 | 304467 |
FRENCH
Hierarchy | Preferred | Acceptable | Total |
finding | 23146 | 1658 | 24804 |
metadata | 1 | 1 | |
procedure | 17698 | 736 | 18434 |
product | 3 | 3 | 6 |
situation | 188 | 40 | 228 |
substance | 2197 | 192 | 2389 |
Total | 43223 | 2629 | 45862 |
The other changes are updates of existing content.
Differences found in package Comparison | No RF2 records impacted | Rationale |
Concept files | 1 | 1 record added |
Association files | 2 | 2 records added |
AttributeValue files | 2410 | 2408 records added/updated, plus 2 inactivated |
Description files (EN) | 2 | 2 records added |
Description files (FR) | 49641 | 48498 records added/updated, plus 1143 inactivated |
Description files (NL) | 307,658 | 307,374 records added/updated, plus 284 inactivated |
Language files (EN) | 2 | 2 records added |
Language files (FR) | 48121 | 47010 records added/updated, plus 1111 inactivated |
Language (FR) context specific GP Refset | 2217 | 2184 records added/updated, plus 33 inactivated |
Language files (NL) | 306,023 | 305,788 records added/updated, plus 235 inactivated |
Language (NL) context specific GP Refset | 2225 | 2175 records added/updated, plus 50 inactivated |
Inferred Relationship files | 3 | 3 records added/updated |
OWLExpression files | 1 | 1 record added/updated |
RefsetDescriptor files | 1 | 1 record added (for new medical problems refset) |
Translated Plant Materials Simple Refset | 0 | 0 records added/updated |
Translated Edible Substances Simple Refset | 0 | 0 records added/updated |
Translated Animal Materials Simple Refset | 0 | 0 records added/updated |
Belgian GP refset files | 1296 | 1280 records added/updated, plus 16 inactivated |
Belgian POC FHIR no allergy Refset files | 0 | 0 records added/updated |
Belgian POC FHIR causative agent, no drug Refset files | 0 | 0 records added/updated |
Belgian POC FHIR manifestation Refset files | 0 | 0 records added/updated |
Extended Map files (containing the new BE ICD-10 map content) | 0 | 0 records added/updated |
Belgian subset for medical problems in patient health records refset files | 7979 | 7979 records added for this new refset (40811000172108) |
Metadata .json file | n/a | New field added - "previousPublishedPackage" |
Delta files | n/a | All Delta files removed from package, as planned in line with MS & International Edition packaging conventions |
4 Technical notes
4.1 Known Issues
Known Issues are content or technical issues where the root cause is understood, and the resolution has been discussed and agreed but has yet to be implemented. This can be due to a number of reasons, from lack of capacity within the current editing cycle, to the risk of impact to the stability of SNOMED CT if the fix were to be deployed at that stage in the Product lifecycle.
For the SNOMED CT Managed Service - Belgium Extension Release, the following Known Issues were identified, and agreed to be resolved in the next editing cycle:
4.2 Technical notes
Please be aware that the following new files have been added to the Belgium Extension Release package, representing the new refsets being introduced in this editing cycle:
- Belgian subset for medical problems in patient health records:
der2_Refset_MedicalProblemsInPatientHealthRecordsSimpleRefsetSnapshot_BE1000172_20220315.txt
der2_Refset_MedicalProblemsInPatientHealthRecordsSimpleRefsetFull_BE1000172_20220315.txt
4.3 Notice of changes to the International Edition Release Schedule
As you may already know SNOMED International are transitioning to a monthly delivery schedule for the International Edition of SNOMED CT. The move towards more frequent releases of SNOMED CT will realize several benefits, including:
- The potential to be able to get content changes into the terminology in a shorter time frame.
- The fostering of better interoperability, as a result of entities being able to consume release content that is more aligned with other organizations.
- The prevention of circular dependencies that occur in longer projects, due to the move towards smaller, more manageable authoring projects.
- More automated validation services, as a result of the inherent removal of the Alpha/Beta stages in the Release cycle.
Whilst most users will continue unaffected (as they can simply continue to download the releases every 6 months as always), this transition will necessarily involve a few changes to process/packages:
- Delta files have been removed from both International and Managed Service release packages, including the Belgium Extension. A Delta Generation service will be provided for those who need it. The Delta Generation Tool allows users to create their own Delta between two fixed release dates - you can find it here:
- The ICD-0/ICD-10 Maps will continue to be published in each Monthly International Edition release package (in line with that month's content) for the foreseeable future, unless we experience issues with the new process in Production, and they need to be removed at a later date.
The first monthly Release of the SNOMED CT International Edition was published on the 28th February 2022 with the Delta files having been removed, and therefore they will be removed from the Belgium Extension from the March 2022 Release onwards.
Please note - While the SNOMED CT International Edition is moving to monthly releases, the Belgium Extension of SNOMED CT will remain on the current bi-annual release schedule of March and September.
Approvals
Final Version | Date | Approver | Comments |
---|---|---|---|
1.0 | Terance Shird | ||
1.0 |
| David Op de Beeck | Approved |
1.0 |
| Mounir Bouzanih | Approved |
Download .pdf here:
Draft Amendment History
Version | Date | Editor | Comments |
---|---|---|---|
0.1 | | Andrew Atkinson | Initial draft created |
0.2 |
| Andrew Atkinson | Added in the new files included in this release |
1.0 |
| David Op de Beeck | Final updates |